Whenever we see someone who is not smiling, we should assume that such a person needs to be cheered up. The person may be experiencing family troubles, financial hardships, disappointment, hunger, thirst, headache or a number of other issues. Sometimes, the only thing we can give another person is a smile back to comfort him or her. Giving smiles is a wonderful gesture, and it can brighten up another person’s day almost as much as the sun can if it’s sincere. In fact, a smile to friends and from friends is one of the best ways that a person can tell that he has friends.